New opportunities for quasielastic and inelastic neutron scattering at steady-state sources using mechanical selection of the incident and final neutron energy

Mamantov, Eugene

doi:10.3233/JNR-150019

Title: New opportunities for quasielastic and inelastic neutron scattering at steady-state sources using mechanical selection of the incident and final neutron energy

Full Record
Other Related Research

Abstract

We propose a modification of the neutron wide-angle velocity selector (WAVES) device that enables inelastic (in particular, quasielastic) scattering measurements not relying on the neutron time-of-flight. The proposed device is highly suitable for a steady-state neutron source, somewhat similar to a triple-axis spectrometer, but with simultaneous selection of the incident and final neutron energy over a broad range of scattering momentum transfer. Both the incident and final neutron velocities are defined by the WAVES geometry and rotation frequency. The variable energy transfer is achieved through the natural variation of the velocity of the transmitted neutrons as a function of the scattering angle component out of the equatorial plane.

Authors:

Mamantov, Eugene ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Fri Jun 12 00:00:00 EDT 2015

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1212347

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Neutron Research (Online)

Additional Journal Information:: Journal Name: Journal of Neutron Research (Online); Journal Volume: 18; Journal Issue: 1; Journal ID: ISSN 1477-2655

Publisher:: IOS Press

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Mamantov, Eugene. New opportunities for quasielastic and inelastic neutron scattering at steady-state sources using mechanical selection of the incident and final neutron energy.  United States: N. p., 2015. 
Web.  doi:10.3233/JNR-150019.

Copy to clipboard


                    Mamantov, Eugene. New opportunities for quasielastic and inelastic neutron scattering at steady-state sources using mechanical selection of the incident and final neutron energy.  United States.  https://doi.org/10.3233/JNR-150019

Copy to clipboard


                    Mamantov, Eugene. Fri .  
"New opportunities for quasielastic and inelastic neutron scattering at steady-state sources using mechanical selection of the incident and final neutron energy".  United States.  https://doi.org/10.3233/JNR-150019.  https://www.osti.gov/servlets/purl/1212347.

Copy to clipboard


                    
@article{osti_1212347,

  title        = {New opportunities for quasielastic and inelastic neutron scattering at steady-state sources using mechanical selection of the incident and final neutron energy},

  author       = {Mamantov, Eugene},

  abstractNote = {We propose a modification of the neutron wide-angle velocity selector (WAVES) device that enables inelastic (in particular, quasielastic) scattering measurements not relying on the neutron time-of-flight. The proposed device is highly suitable for a steady-state neutron source, somewhat similar to a triple-axis spectrometer, but with simultaneous selection of the incident and final neutron energy over a broad range of scattering momentum transfer. Both the incident and final neutron velocities are defined by the WAVES geometry and rotation frequency. The variable energy transfer is achieved through the natural variation of the velocity of the transmitted neutrons as a function of the scattering angle component out of the equatorial plane.},

  doi          = {10.3233/JNR-150019},

  journal      = {Journal of Neutron Research (Online)},

  number       = 1,

  volume       = 18,

  place        = {United States},

  year         = {Fri Jun 12 00:00:00 EDT 2015},

  month        = {Fri Jun 12 00:00:00 EDT 2015}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.3233/JNR-150019

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Broadband Wide-Angle VElocity Selector (BWAVES) neutron spectrometer designed for the SNS Second Target Station

Journal Article Mamontov, Eugene ; Bordallo, Heloisa N. ; Delaire, Olivier ; ... - EPJ Web of Conferences (Online)

A recently proposed wide-angle velocity selector (WAVES) device for choosing the velocity of detected neutrons after they have been scattered by the sample paves the way for inverted geometry neutron spectrometers with continuously adjustable final neutron wavelength. BWAVES broadband inverted geometry spectrometer proposed for the Second Target Station at the Spallation Neutron Source at Oak Ridge National Laboratory is designed using WAVES to simultaneously probe dynamic processes spanning 4.5 decades in time (energy transfer). This makes BWAVES a uniquely flexible instrument which can be viewed as either a quasielasitc neutron scattering (QENS) spectrometer with a practically unlimited (overlapping with themore »« less
https://doi.org/10.1051/epjconf/202227202003

Full Text Available
Quasielastic and low-energy inelastic neutron scattering study of HoCrO₃ by high resolution time-of-flight neutron spectroscopy

Journal Article Chatterji, T. ; Demmel, F. ; Jalarvo, N. ; ... - Journal of Physics. Condensed Matter

In order to understand the origin of the huge quasielastic magnetic scattering observed previously with a back-scattering neutron spectrometer, we have re-investigated in this paper the low energy excitations in HoCrO₃ by inelastic neutron scattering in a much wider energy range with time-of-flight neutron spectrometers. The inelastic signals are due to the excitations between the ground state doublet of the Ho ion. The quasielastic signal is due to the fluctuation of the disordered Ho moments. At low temperature the intensity of quasielastic scattering is small. It starts increasing as the temperature increases above 30 K. At the same temperature, themore »« less
Cited by 1
https://doi.org/10.1088/1361-648X/aa9245

Full Text Available
The ratio R{sub dp} of the quasielastic nd {yields} p(nn) to the elastic np {yields} pn charge-exchange-process yields at the proton emitting angle {theta}{sub p,lab} = 0 deg. over 0.55-2.0 GeV neutron beam energy region. Experimental results

Journal Article Sharov, V. I., E-mail: sharov@sunhe.jinr.ru ; Morozov, A A ; Shindin, R A ; ... - Physics of Atomic Nuclei

New experimental results on ratio R{sub dp} of the quasielastic charge-exchange yield at the outgoing proton angle {theta}{sub p,lab} = 0 deg. for the nd {yields} p(nn) reaction to the elastic np {yields} pn charge-exchange yield, are presented. The measurements were carried out at the Nuclotron of the Veksler and Baldin Laboratory of High Energies of the JINR (Dubna) at the neutron-beam kinetic energies of 0.55, 0.8, 1.0, 1.2, 1.4, 1.8, and 2.0 GeV. The intense neutron beam with small momentum spread was produced by breakup of deuterons which were accelerated and extracted to the experimental hall. In both reactionsmore »« less
https://doi.org/10.1134/S1063778809060131
Beam-target double-spin asymmetry in quasielastic electron scattering off the deuteron with CLAS

Journal Article Mayer, M. ; Kuhn, S. E. ; Adhikari, K. P. ; ... - Physical Review C

Background: The deuteron plays a pivotal role in nuclear and hadronic physics, as both the simplest bound multinucleon system and as an effective neutron target. Quasielastic electron scattering on the deuteron is a benchmark reaction to test our understanding of deuteron structure and the properties and interactions of the two nucleons bound in the deuteron. Purpose: The experimental data presented here can be used to test state-of-the-art models of the deuteron and the two-nucleon interaction in the final state after two-body breakup of the deuteron. Focusing on polarization degrees of freedom, we gain information on spin-momentum correlations in the deuteronmore »« less
Cited by 3
https://doi.org/10.1103/PhysRevC.95.024005

Full Text Available
Final state effects in inclusive quasielastic electron scattering from nuclei: Clues from quantum fluids

Conference Silver, R N ; Clark, J W

The impulse approximation (IA) predicts that momentum distributions, n/sub k/, in many-body systems should be measurable by inclusive quasielastic scattering at high energy and momentum (w,Q) transfer. The observations that the cross section appears to satisfy ''Y-scaling'' (i.e., is a function not of both w and Q of a single variable, Y) is usually taken as a signature of the IA. In nuclear physics, inelastic electron scattering at GeV energies should reveal the high momentum components of the nuclear wave function. In quantum fluids, neutron scattering at hundreds of MeV energies should measure the Bose condensate in superfluid /sup 4/Hemore »« less
Full Text Available

Similar Records